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Experimental Study of Energy Pumping in Acoustics

[+] Author Affiliations
Romain Bellet, Bruno Cochelin, Philippe Herzog, Pierre-Olivier Mattei

CNRS, Marseille, France

Paper No. DETC2007-34805, pp. 943-949; 7 pages
doi:10.1115/DETC2007-34805
From:
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 6th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4806-X | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME

abstract

This paper presents an experimental vibro-acoustic set-up that aims to reproduce the energy pumping phenomenon between an acoustic medium and an essentially nonlinear oscillator. It shows a one-way irreversible transfer of energy between the first acoustic mode in a tube and a thin visco-elastic membrane. Various observed aspects of energy pumping are presented: behaviors under sinusoidal forcing, pumping threshold, resonance capture and transient response.

Copyright © 2007 by ASME
Topics: Acoustics

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